Description High quality Easy to installUniversal and Easy to InstallThis is a replacement for your master brake reservoir sight glass Comes with the proper gasket for sealing in the brake fluid Specification MeterialGlassDiameter18mmFitment Universal This will fit the majority of old Honda Suzuki Kawasaki lots of dirt bikes Harley s and many other brake cylinders It can fit to your front or rear brake cylinder as long as its 18mm Installation 1 Completely remove old sight glass including metal ring and rubber gasket Be sure the reservoir is drained of all brake fluid and has been washed 2 Place the rubber seal in the sight glass hole 3 Gently press the sight glass piece in to the hole 4 Cover the face with a soft cloth or towel to prevent damage and carefully tap into place with a hammer Check to make sure the face is flush and even with the font face 5 Fill with brake fluid bleed the brakes and get back to riding safely Package Included 1 XMirror Gasket